import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'


import Router from 'vue-router'

const originalPush = Router.prototype.push
Router.prototype.push = function push(location, onResolve, onReject) {
  if (onResolve || onReject) return originalPush.call(this, location, onResolve, onReject)
  return originalPush.call(this, location).catch(err => err)
}

Vue.use(VueRouter)

const routes = [
  {  path: '/', redirect: '/login' },
  {  path: '/login', component: Login },
  {  path: '/home', componennt: Home }
]

const router = new VueRouter({
  routes
})


router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  // next () 放行 next ('/login') 强制跳转
  
  if(to.path === '/login') return next();
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login')
  next()
})

export default router
